1500W axial Zener TVS for 22V rail clamping
The 1N6379 is a unidirectional Zener TVS from onsemi's Mosorb™ series, rated for 1500W peak pulse power in a DO-201AD axial package. It clamps a 22V reverse standoff rail with a minimum breakdown voltage of 25.9V and a maximum clamping voltage of 37.5V at rated peak pulse current. The junction temperature range spans -65°C to 175°C, covering extreme thermal environments found in industrial controls, telecom rectifiers, and automotive auxiliary circuits.
Obsolete — sourcing through independent channels
onsemi lists the 1N6379 as Obsolete. Sourcing now runs through independent distribution — any available stock should be date-code verified against the original onsemi production period. The DO-201AD axial package is through-hole, which simplifies manual replacement but limits automated assembly throughput.
Design-in note for replacement selection
A direct replacement must match the 1500W peak pulse rating, 22V standoff, and unipolar clamping characteristic in DO-201AD or equivalent axial footprint. The 25.9V breakdown minimum and 37.5V clamping maximum define the protection window — any substitute must hold these thresholds to avoid overvoltage stress on the downstream circuitry.